Wireless communication device and method

Abstract

The present technology relates to a wireless communication device and method capable of improving an end-to-end communication rate and reliability. The wireless communication device causes a data frame to be sent, the data frame including data and identification information for identifying coherent joint transmission (CJT) by which the data is finally transmitted. The present technology can be applied to a wireless communication system.

1 . A wireless communication device comprising: a communication control unit that causes a data frame to be sent, the data frame including data and identification information for identifying coherent joint transmission (CJT) by which the data is finally transmitted. 
     
     
         2 . The wireless communication device according to  claim 1 , wherein the data frame includes sequence information necessary for reordering decoding of the data. 
     
     
         3 . The wireless communication device according to  claim 2 , wherein the data is coded data coded by an erasure code or a network code. 
     
     
         4 . The wireless communication device according to  claim 3 , wherein the data is sent by a multicast multi-user beamforming (MMUBF) scheme. 
     
     
         5 . The wireless communication device according to  claim 4 , wherein the communication control unit causes capability information including information regarding presence or absence of a function of a source station that provides the data, presence or absence of a function of a relay station that relays the data, and a weight of the MMUBF to be exchanged with a device existing in a network to which the wireless communication device belongs. 
     
     
         6 . The wireless communication device according to  claim 1 , wherein the communication control unit sends a completion notification frame indicating that the data has been sent to another wireless communication device that is a destination of the data. 
     
     
         7 . The wireless communication device according to  claim 6 , wherein the completion notification frame includes the identification information, information regarding a data amount of the data associated with the identification information, and information regarding a plurality of wireless communication devices that is a destination of the data associated with the identification information. 
     
     
         8 . The wireless communication device according to  claim 1 , further comprising a reception unit that receives the data frame sent from another first wireless communication device, wherein the communication control unit causes the data frame to be sent to another second wireless communication device. 
     
     
         9 . The wireless communication device according to  claim 8 , wherein in a case where the another second wireless communication device performs the CJT, the communication control unit causes the data frame to be sent to the another second wireless communication device at same timing as another third wireless communication device that receives the data frame same as the data frame sent from the another first wireless communication device to the wireless communication device. 
     
     
         10 . The wireless communication device according to  claim 9 , wherein the data frame sent to the another second wireless communication device includes padding. 
     
     
         11 . The wireless communication device according to  claim 8 , wherein the communication control unit causes a request frame including the identification information and a request for information regarding the data associated with the identification information to be sent to another third wireless communication device that receives the data frame same as the data frame sent to the wireless communication device from the another first wireless communication device. 
     
     
         12 . The wireless communication device according to  claim 8 , wherein the reception unit receives a request frame including the identification information and a request for information regarding the data associated with the identification information from another third wireless communication device that receives the data frame same as the data frame sent to the wireless communication device from the another first wireless communication device, and the communication control unit causes a response frame including the identification information and the information regarding the data to be sent to the another third wireless communication device in response to the request frame. 
     
     
         13 . The wireless communication device according to  claim 8 , wherein the communication control unit causes status information to be sent to the another first wireless communication device, the status information including information indicating a terminal to be a destination of the CJT, information indicating a relay station group to which a relay station that relays the data belongs, and information regarding a transmission rate achievable in a plurality of the relay station groups for each combination of the relay station group and a transmission scheme. 
     
     
         14 . The wireless communication device according to  claim 8 , wherein in a case where sending can be started along carrier sense multiple access with collision avoidance (CSMA/CA) after a completion notification frame indicating that the data has been sent is received, the communication control unit causes an RTS frame to be sent, and the reception unit receives a CTS frame corresponding to the RTS frame. 
     
     
         15 . A wireless communication method wherein a wireless communication device includes a communication control unit that causes a data frame to be sent, the data frame including data and identification information for identifying coherent joint transmission (CJT) by which the data is finally transmitted. 
     
     
         16 . A wireless communication device comprising:
 a reception unit that receives a data frame including data and identification information for identifying coherent joint transmission (CJT) by which the data is finally sent; and   a decoding unit that decodes the data on a basis of the identification information.   
     
     
         17 . The wireless communication device according to  claim 16 , wherein the data frame includes sequence information necessary for reordering decoding of the data, and the decoding unit decodes the data on a basis of the identification information and the sequence information. 
     
     
         18 . The wireless communication device according to  claim 17 , wherein the data is coded data coded by an erasure code or a network code. 
     
     
         19 . The wireless communication device according to  claim 18 , wherein the data is sent by a multicast multi-user beamforming (MMUBF) scheme. 
     
     
         20 . A wireless communication method comprising:
 by a wireless communication device, receiving a frame including data and identification information for identifying coherent joint transmission (CJT) by which the data is finally sent; and   by the wireless communication device, decoding the data on a basis of the identification information.